Patent US3831920A successfully refreshed from Google Patents.
US3831920A
Expired / Lapsed
US
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Noise preventing shock absorber
Assignee: ACE Controls Inc
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Filing: 1973-01-12
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Granted: 1974-08-27
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Expires: 1993-01-12
Abstract
Abstract A noise preventing shock absorber adapted for silently absorbing the sound due to noise sources, as when moving machine parts engage mating surfaces and decelerate to zero velocity within a short travel distance or stroke. The shock absorber member includes a unitary resilient member which is dish-shaped in vertical cross section and provided with an axial bore therethrough, with the peripheral surface of the axial bore forming an inner force-transmitting surface. An upper forcereceiving means is bonded to the inner force-transmitting surface. The resilient member is provided with a peripheral outer force-transmitting surface concentric with and axially offset downwardly from the inner force-transmitting surface. The resilient member is also provided with an axially inward extended recess on the lower side thereof around the axial bore and within the outer force-transmitting surface. A lower force-receiving means as, for example, an outer tube is bonded to the outer force-transmitting surface. The shock absorber may be used in a stacked arrangement to provide a unit of increased shock absorbing and noise preventing capacity.
Inventors
- 👤 C Meldrum
- 👤 G Bindon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:45
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/0076; B21; B21D; B21D55/00; B21J; B21J13/00; F; F16; F16F; F16F1/00; F16F1/36; F16F1/38; F16F1/3807; F16F1/3814; F16F3/00; F16F3/08; F16F3/087; F16F3/0873; F16F3/0876
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
180 words
A shock absorber comprising: a. a plurality of shock absorber members; b. eacH of said shock absorber members including a resilient member which is dish-shaped in vertical cross section and provided with an axial bore therethrough, with the peripheral surface of the axial bore forming an inner force-transmitting surface; c. an upper force-receiving shaft bonded to said inner forcetransmitting surface of each resilient member; d. each of said resilient members being provided with a peripheral outer force-transmitting surface concentric with and axially offset downwardly from its inner force-transmitting surface; e. each of said resilient members being provided with an axially inward extended recess on the lower side thereof, around its axial bore and within its outer force-transmitting surface; f. a lower force-receiving tube bonded to said outer forcetransmitting surface; and, g. said plurality of shock absorber members are disposed in a vertical stacked arrangement with the lower force receiving outer tubes thereof being operatively aligned with the outer tube of an upper shock absorber member being operatively seated on the upper end of the next below disposed shock absorber member.
Claim 2
Dependent Claim
180 words
A shock absorber comprising: a. a plurality of shock absorber members; b. eacH of said shock absorber members including a resilient member which is dish-shaped in vertical cross section and provided with an axial bore therethrough, with the peripheral surface of the axial bore forming an inner force-transmitting surface; c. an upper force-receiving shaft bonded to said inner forcetransmitting surface of each resilient member; d. each of said resilient members being provided with a peripheral outer force-transmitting surface concentric with and axially offset downwardly from its inner force-transmitting surface; e. each of said resilient members being provided with an axially inward extended recess on the lower side thereof, around its axial bore and within its outer force-transmitting surface; f. a lower force-receiving tube bonded to said outer forcetransmitting surface; and, g. said plurality of shock absorber members are disposed in a vertical stacked arrangement with the lower force receiving outer tubes thereof being operatively aligned with the outer tube of an upper shock absorber member being operatively seated on the upper end of the next below disposed shock absorber member.
Claim 3
Dependent Claim
18 words
A shock absorber as defined in claim 1 wherein: a. said upper force-receiving shaft comprises an inner tube.
Claim 4
Dependent Claim
20 words
A shock absorber as defined in claim 2, wherein: a. an impact-receiving shaft is operatively mounted through said inner tubes.
Claim 5
Dependent Claim
89 words
A shock absorber having a plurality of shock absorber members as defined in claim 1, wherein: a. said plurality of shock absorber members are disposed in a vertically stacked arrangement with the outer tubes thereof being operatively connected together with the upper force-receiving shaft of a lower shock absorber member being operatively connected to the upper force-receiving shaft of the next above disposed shock absorber member; and, b. the upper force-receiving shaft of the uppermost shock absorber member is provided with an impact head on the upper end thereof.
Claim 6
Dependent Claim
110 words
A shock absorber having a plurality of shock absorber members as defined in claim 3, wherein: a. said plurality of said shock absorber members are disposed in a vertically stacked arrangement with the outer tubes thereof being operatively connected together, and with the inner tube of an upper shock absorber member being operatively seated on the upper end of the next below disposed shock absorber member, and with said impact-receiving shaft extending through the inner tubes of said shock absorber members, and with the means on the upper end of said shaft engaging the upper end of the uppermost inner tube for transmitting an impact load to the inner tubes.
Claim 7
Dependent Claim
56 words
A shock absorber as defined in claim 5, wherein: a. said impact-receiving shaft comprises a unitary tubular shaft having an impact-receiving flange on the upper end thereof which seats on the upper end of the uppermost inner tube, and said impact-receiving shaft being provided with means on the lower end thereof for receiving an impact load.
Claim 8
Dependent Claim
91 words
A shock absorber as defined in claim 3, wherein: a. said impact-receiving shaft comprises a plurality of operatively connected shaft members; b. the uppermost one of said shaft members having an impact head thereon for receiving an impact load; c. load transmitting means carried on the uppermost one of said shaft members and engaging the upper end of the uppermost inner tube for transmitting an impact load thereto; and d. the lowermost one of said shaft members being provided with means on the lower end thereof for receiving an impact load.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |